Halo Infinite

You will have to first find the Grappleshot during a match. It acts as equipment, like the drop wall. Once you have it, aim at any weapon on a wall (or ground I assume) and press whatever button you have to activate equipment (on default it's ). You'll shoot your grapple, and pick up the weapon. Simple as.

From the multiplayer menu select the Big Team Battle playlist. A good map to get this achievement on is Fragmentation. Once the game starts go into the bottom of your team's base. In this room you'll see a small bump in the middle of the room. On one side of this bump is a Grappleshot, and on the other side are three guns locked onto walls. Walk over the Grappleshot and ensure you have it equipped (the icon for it is in the bottom right corner of the screen, near the grenades. It looks like a grappling hook). Next, walk over to one of the weapons on a nearby rack. Aim for any of the three guns, press RB, or whichever button you would push to use equipment, and as long as you hit the gun with the grapple it should pull the gun to you.

It is possible to get this on other maps, but I noticed that the Grappleshot will consistently spawn in the same location on Fragmentation no matter what the game type is, whereas it seems random elsewhere. Cheers!

To unlock this achievement, you must first collect a GRAPPLESHOT in a multiplayer game. Once it's done, just use it on a weapon on the ground or on the wall to get it. Here is a video showing you how.

Here’s my video :)

Play a Fiesta multiplayer match, so that you will randomly get the grappleshot instead of looking for one on the map. Once you get it, simply drop one of your weapons by keeping pressed , then hit to catch it from the ground. Way faster than looking for a weapon on the wall racks.

To get this Achievement you must pickup any weapon with the grappling hook.

This is probably one of the easiest Achievements in the game & can be unlocked in both Matchmaking & Bot Bootcamp.